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Article Photos: Marijuana legalization raises safety questions1/6

In this photo taken on Friday, Jan. 4, 2013, Genifer Murray, founder and CEO of CannLabs talks about the testing of marijuana during an interview at her lab in Denver. Colorado and Washington are setting up commercial pot sales, but first they have to figure out how to regulate a drug that people have long been growing clandestinely but now is going commercial. That's why there are places like CannLabs in south Denver, where medical marijuana dispensaries and consumers can voluntarily have their marijuana and pot-infused edibles tested. (AP Photo/Ed Andrieski)